42229836 has 180 divisors, whose sum is σ = 131054616. Its totient is φ = 11750400.

The previous prime is 42229813. The next prime is 42229841. The reversal of 42229836 is 63892224.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 42229836.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1029976 + ... + 1030016.

Almost surely, 2^42229836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42229836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65527308).

42229836 is an abundant number, since it is smaller than the sum of its proper divisors (88824780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42229836 is a wasteful number, since it uses less digits than its factorization.

42229836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 74 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 42229836 is about 6498.4487379682. The cubic root of 42229836 is about 348.2355717706.

The spelling of 42229836 in words is "forty-two million, two hundred twenty-nine thousand, eight hundred thirty-six".